[3dprinter-general] Cura 5.0.0

[Sebastian Kuzminsky]

I have updated the packages for Cura and its dependencies from Ultimaker.

https://salsa.debian.org/seb_kuzminsky-guest/fdm-materials/
https://salsa.debian.org/seb_kuzminsky-guest/libcharon
https://salsa.debian.org/seb_kuzminsky-guest/libsavitar
https://salsa.debian.org/seb_kuzminsky-guest/libarcus
https://salsa.debian.org/seb_kuzminsky-guest/uranium
https://salsa.debian.org/seb_kuzminsky-guest/cura-engine
https://salsa.debian.org/seb_kuzminsky-guest/pynest2d
https://salsa.debian.org/seb_kuzminsky-guest/cura

This doesn't quite build on unstable, it needs qt6 from experimental. 
But with that allowance, the packages build and install and run on unstable.

I am a novice at packaging, and I have probably made some mistakes in 
those packages.  Some things I'm especially unsure about are:

* libsavitar version is 5.0.0, it installs `libSavitar.so.5.0.0`, but 
the package name is `libsavitar0.deb`.  Should it be `libsavitar5.deb`?

* Similarly libarcus installs `libArcus.so.5.0.0`, but the package name 
is `libarcus3.deb`.

* The `cura` and `cura-engine` repos come with tests, but a number of 
the tests fail.  I've disabled the failing tests via debian/patches, but 
I don't know how much diligence is expected in debugging these failures. 
  Upstream does not appear to use a public CI/CD system as far as I can 
tell, and their github actions are broken and don't run the tests.

* I expect the git hygiene in some of those repos may not pass muster. 
I welcome feedback and will try to address any issues.


-- 
Sebastian Kuzminsky